fossiliferous

Grewingkia canadensis (fossil rugose coral encrusted with bryozoans) (Whitewater Formation, Upper Ordovician; Richmond South roadcut, Wayne County, Indiana, USA) 4
by James St. John

Fluvial deposits (Holocene; Roaring Run, Warren County, Ohio, USA) 2
by James St. John

Karst & Columbus Limestone (Middle Devonian; Indian Village Canyon, Columbus, Ohio, USA) 2
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 5
by James St. John

Encrinite (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 13
by James St. John

Coral in fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 27
by James St. John

Minor back thrust fault in interbedded fossiliferous limestones and shales (Fairview Formation, Upper Ordovician; upper cut, Maysville West roadcut, Kentucky, USA) 1
by James St. John

Trilobite packstone (Alum Shale Formation, Upper Cambrian; Kinnekulle Outlier, Västergötland, Sweden) 7
by James St. John

Fossiliferous limestone & fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 19
by James St. John

Semi-cannel coal (Middle Mercer Coal, Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA)
by James St. John

Fossil gastropod in limestone (Columbus Limestone, Middle Devonian; Quarry Trails Park, Columbus, Ohio, USA) 1
by James St. John

Fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 1
by James St. John

Columbus Limestone (Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 6
by James St. John

Plant fossils in claystone (Pekin Formation, Upper Triassic; Boren Clay Pit, Gulf, North Carolina, USA) 18
by James St. John

Favositid coral in fossiliferous limestone (Columbus Limestone, Middle Devonian; southern shore of Kelleys Island, Lake Erie, Ohio, USA) 1
by James St. John

Upper Mercer Flint (Middle Pennsylvanian; Route 666 roadcut, Muskingum County, Ohio, USA) 1
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 34
by James St. John

Partially silicified Hexagonaria (fossil coral) (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 8
by James St. John

Wild Dilly Pond (San Salvador Island, Bahamas) 4
by James St. John

Hexagonaria percarinata (fossil coral) (Traverse Group, Middle Devonian; Bay View, Michigan, USA)
by James St. John

Dixon Cave Trail (Mammoth Cave National Park, Kentucky, USA) 1
by James St. John

Stromatoporoid in limestone (Columbus Limestone, Middle Devonian; abandoned quarry, Kelleys Island, Lake Erie, Ohio, USA) 2
by James St. John

Fossiliferous limestone (Jeffersonville Limestone, Middle Devonian; Falls of the Ohio, southern Indiana, USA) 32
by James St. John

Grypania spiralis (Negaunee Iron-Formation, Paleoproterozoic, 2.11 Ga or 1.874 Ga; Empire Mine, SE of town of Ishpeming, Marquette County, Upper Peninsula of Michigan, USA) 51
by James St. John

Partially silicified Hexagonaria (fossil coral) (Columbus Limestone, Middle Devonian; Emerald Parkway roadcut, Dublin, Ohio, USA) 9
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; Nellie area, Coshocton County, Ohio, USA) 60
by James St. John

Mancos Shale badlands (Upper Cretaceous; near the town of Grand Junction, Colorado, USA) 8
by James St. John

Wavy-bedded fossiliferous limestone (Putnam Hill Limestone, Middle Pennsylvanian; Rt. 541 roadcut, west of Tunnel Hill, Coshocton County, Ohio, USA) 11
by James St. John

Hexagonaria sp. (fossil coral) (Devonian; Lake Michigan shoreline, near Bay View, Michigan, USA) 2
by James St. John

Spiriferid brachiopod (Solsville Shale, Middle Devonian; Morrisville North roadcut, Madison County, New York State, USA) 7
by James St. John

Fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Tunnel Hill North Portal Outcrop, Coshocton County, Ohio, USA) 2
by James St. John

Dichocrinus ficus (fossil crinoid) (Edwardsville Formation, Lower Mississippian; near Crawfordsville, Indiana, USA) 1
by James St. John

Fossiliferous limestone & fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 32
by James St. John

Dixon Cave (Mammoth Cave National Park, Kentucky, USA) 4
by James St. John

Pentamerid brachiopods in dolostone (Silurian) 1
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 75
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 40
by James St. John

Coiled cephalopod (Lowellville Shale, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 1
by James St. John

Fossiliferous marlstones (Split Fish Layer, Fossil Butte Member, Green River Formation, Eocene; Ulrich's Quarry, west of Kemmerer, southwestern Wyoming, USA)
by James St. John

Lower Mercer Limestone (Middle Pennsylvanian; Clay Pit Road Outcrop, Muskingum County, Ohio, USA) 6
by James St. John

Minor thrust fault in interbedded fossiliferous limestones and shales (Fairview Formation, Upper Ordovician; upper cut, Maysville West roadcut, Kentucky, USA) 1
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 43
by James St. John

Archaeocyathan limestone (Ajax Limestone, Lower Cambrian; Ajax Mine, South Australia) 14
by James St. John

Brachiopod in fossiliferous limestone (Lowellville Limestone, Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 6
by James St. John

Fossil rosary
by pnh

Maxville Limestone (Mississippian; East Fultonham Pit, Muskingum County, Ohio, USA) 14
by James St. John

Pecopteris sp. (fossil fern) (Mazon Creek Lagerstätte, Francis Creek Shale, Middle Pennsylvanian; Mazon Creek area, Illinois, USA) 2
by James St. John

Rugose corals (Leadville Limestone, Lower Mississippian; Fossil Ridge, Sawatch Range, Colorado, USA) 2
by James St. John

Oolitic ironstone (Brassfield Formation, Lower Silurian; Ohio Brush Creek roadcut, southern Ohio, USA) 3
by James St. John

Fossiliferous shale (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 2
by James St. John

Dixon Cave Trail (Mammoth Cave National Park, Kentucky, USA) 2
by James St. John

Hexagonaria sp. (fossil coral) (Devonian; Lake Michigan shoreline, near Bay View, Michigan, USA) 3
by James St. John

Nellie Blue Flint (Upper Mercer Flint, Middle Pennsylvanian; eastern Ohio, USA) 41
by James St. John

Mancos Shale badlands (Upper Cretaceous; near the town of Grand Junction, Colorado, USA) 4
by James St. John

Karst & Columbus Limestone (Middle Devonian; Indian Village Canyon, Columbus, Ohio, USA) 3
by James St. John

Natural Bridge of Virginia with Ordovician dolostones over limestones (Natural Bridge State Park, Virginia, USA) 1
by James St. John

Zebra limestone (Antelope Valley Limestone, Middle Ordovician; Meiklejohn Peak, near Beatty, Nevada, USA) 3
by James St. John

Fossiliferous limestone (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 6
by James St. John

Fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Tunnel Hill North Portal Outcrop, Coshocton County, Ohio, USA) 1
by James St. John

Favositid coral in fossiliferous limestone (Columbus Limestone, Middle Devonian; Olentangy Indian Caverns, central Ohio, USA) 2
by James St. John